How can you use addition to find the cost of 8comic books?

To find the total cost of 8 comic books, you can use addition. Here's an example:

Let's say each comic book costs $3.50. To find the total cost of 8 comic books, you can add the cost of each comic book together:

```

$3.50 + $3.50 + $3.50 + $3.50 + $3.50 + $3.50 + $3.50 + $3.50 = $28.00

```

Therefore, the total cost of 8 comic books is $28.00.